Issue 89, 2017, Issue in Progress

Microbial oil production by Mortierella isabellina from corn stover under different pretreatments

Abstract

Mixed culture of Trichoderma reesei and Aspergillus niger was employed to accomplish on-site cellulase production where cellulases were applied directly to the enzymatic hydrolysis of pretreated corn stover. We comprehensively compared the five pretreatments including sodium hydroxide, steam explosion, aqueous ammonia, lime and diluted sulfuric acid in the enzymatic hydrolysis and then in the whole processes from corn stover to single cell oil (SCO). The results were not completely but roughly the same. However, it is conclusive that sodium hydroxide pretreatment was the best one. The process with sodium hydroxide pretreatment could produce 23.5 g dry cell biomass harboring 13.7 g single cell oil (SCO) from 146.2 g corn stover. The total yields of cell biomass and SCO were 0.161 and 0.094 g gāˆ’1 corn stover, respectively. This process was proven the most efficient. Through this work, we established efficient SCO production process from corn stover.

Graphical abstract: Microbial oil production by Mortierella isabellina from corn stover under different pretreatments

Article information

Article type
Paper
Submitted
31 Oct 2017
Accepted
08 Dec 2017
First published
12 Dec 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 56239-56246

Microbial oil production by Mortierella isabellina from corn stover under different pretreatments

C. Zhao, L. Deng, H. Fang and S. Chen, RSC Adv., 2017, 7, 56239 DOI: 10.1039/C7RA11900C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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